Bushey, Hertfordshire
Positive input ventilation (PIV) in Bushey
Loft or wall units that gently push filtered air into the home to tackle condensation. Covering Bushey and WD1, WD19 and WD23.
- From £825 inc VAT per home
- Free survey

If your Bushey flat has no loft, a wall-mounted PIV unit does the same job through an outside wall.
Work in Bushey follows the rules for England and finishes with a written record of what was fitted and how it was set up.
PIV in Bushey at a glance
- Town
- Bushey, Hertfordshire
- Postcode districts
- WD1, WD19 and WD23
- Nearby
- Watford (2 miles), Harrow Weald (2 miles) and West Watford (3 miles)
- Price region
- East of England
- Survey
- Free survey (UK mainland)
What the work involves
PIV works well in houses and flats with general condensation on windows and cold walls. It does not replace extract fans: kitchens and bathrooms still need their own extract to remove steam at source.
PIV with fan upgrades
PIV plus humidity-controlled extract fans in the kitchen and bathroom for the most stubborn condensation.
Loft-mounted PIV
The most common option for houses with a loft. Usually fitted in half a day.
Guide prices in Bushey
| Work | Guide price |
|---|---|
| Positive input ventilation (PIV) loft unit, supplied and fitted (per home) | £825–£1,475 inc VAT |
| Wall-mounted PIV unit for a flat (core drilled through an outside wall) (per flat) | £1,050–£1,775 inc VAT |
| Heater module or heated PIV unit (extra over a standard unit) (extra) | £150–£310 inc VAT |
Guide prices using East of England rates. Prices include VAT at 20%. A guide price is not a quote: we confirm a fixed price in writing first.
Signs it is time to call us
- Washing dried indoors makes everything worse
- You have no loft but still need whole-flat ventilation (wall unit)
- Streaming windows on most mornings in winter
Rules that apply in England
English building work follows Approved Document F (2021 edition) for ventilation rates, installation and commissioning. It sets extract rates for kitchens, bathrooms and utilities and asks for mechanical ventilation to be commissioned and recorded.
Questions from Bushey
How do I get a price for a PIV unit in Bushey?
Use the guide price tool, the form on this page, live chat, WhatsApp or call 0800 088 6341. A postcode and a couple of photos help us give you a useful answer first time.
Will PIV make my house cold?
Most units temper or reduce the flow when the incoming air is cold, and a heated unit warms it. Placed correctly on the landing, the air spreads gently rather than blowing on anyone.
Can PIV be fitted in a flat?
Yes. Flats without loft space use a wall-mounted PIV unit that draws air from outside through an outside wall.
What area around Bushey do you work in?
All of Hertfordshire. Near Bushey that includes Watford, Harrow Weald, West Watford and North Watford.
Do you cover Bushey and nearby?
Yes. We cover Bushey and nearby places including Watford, Harrow Weald, West Watford and North Watford. Send your postcode and we will confirm.
Get a PIV guide price for your Bushey home online, then confirm it on a free survey.
PIV near Bushey
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